Merge pull request #139 from catatsuy/feature_add_os_stdout_is_terminal

Add check for input file in CLI Run method

cli/cli.go

@@ -15,6 +15,7 @@ import (
 	"github.com/catatsuy/notify_slack/config"
 	"github.com/catatsuy/notify_slack/slack"
 	"github.com/catatsuy/notify_slack/throttle"
+	"golang.org/x/term"
 )
 
 var (
@@ -106,6 +107,9 @@ func (c *CLI) Run(args []string) int {
 			fmt.Fprintln(c.errStream, "You cannot pass multiple files")
 			return ExitCodeParseFlagError
 		}
+	} else if term.IsTerminal(int(os.Stdin.Fd())) {
+		fmt.Fprintln(c.errStream, "No input file specified")
+		return ExitCodeFail
 	}
 
 	tomlFile = config.LoadTOMLFilename(tomlFile)

go.mod

@@ -3,3 +3,8 @@ module github.com/catatsuy/notify_slack
 go 1.19
 
 require github.com/pelletier/go-toml/v2 v2.2.0
+
+require (
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/term v0.18.0 // indirect
+)

go.sum

@@ -14,6 +14,10 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
+golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.18.0 h1:FcHjZXDMxI8mM3nwhX9HlKop4C0YQvCVCdwYl2wOtE8=
+golang.org/x/term v0.18.0/go.mod h1:ILwASektA3OnRv7amZ1xhE/KTR+u50pbXfZ03+6Nx58=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=